package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
@Autowired
private DishMapper dishMapper;
@Autowired
private DishFlavorMapper dishFlavorMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;

/**
 * 新增菜品和对应口味
 * @param dishDTO
 */
@Transactional
    @Override
    public void savewithflavors(DishDTO dishDTO) {
    //向菜品表插入一条数据
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        //获取insert操作后的 id
        Long dishId = dish.getId();
        //向口味表插入多条数据
    List<DishFlavor> flavors = dishDTO.getFlavors();
    if (flavors != null && flavors.size() > 0)
    {
        //通过循环遍历赋值id
        flavors.forEach(dishFlavor ->{
            dishFlavor.setDishId(dishId);
        });

        dishFlavorMapper.insertBatch(flavors);
    }
}
/**
 * 菜品分页查询
 * @param dishPageQueryDTO
 * @return
 */

    @Override
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
         Page<DishVO> page = dishMapper.page(dishPageQueryDTO);
         return new PageResult(page.getTotal(),page.getResult()) ;
    }
 /**
 * 根据id查询菜品和对应的口味数据
 * @param id
 * @return
 */
    @Override
    public DishVO getByIdWithFlavors(Long id) {
        //根据id查询菜品数据
        Dish dish = dishMapper.getById(id);
        //根据菜品id查询口味数据
        List<DishFlavor> flavors = dishFlavorMapper.getByDishId(id);
        //将数据封装到vo中
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavors);
     return dishVO;
    }
    /**
     * 根据id修改菜品基本信息和对应的口味信息
     * @param dishDTO
     */
    @Override
    public void updateWithFlavors(DishDTO dishDTO) {
        //修改菜品表基本信息
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        //删除原有的口味信息
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        //重新插入口味信息
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            //向口味表中插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 批量删除菜品
     * @param ids
     * @return
     */
@Transactional
    @Override
    public void delete( List<Long> ids) {
    //判断菜品是否能够删除？--是否起售状态
    for (Long id : ids) {

        Dish dish = dishMapper.getById(id);
        if (dish.getStatus() == StatusConstant.ENABLE) {  //菜品处于起售状态
            throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);

        }
    }
        //判断菜品是否能够删除？--是否关联了套餐
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds != null && setmealIds.size() > 0) {
            //当前菜品被套餐关联了，不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        //删除菜品表中的菜品数据
        for (Long id : ids) {
            dishMapper.deleteById(id);
        //删除菜品关联的口味数据
            dishFlavorMapper.deleteByDishId(id);
        }


//todo  苍穹外卖敲完，敲完就桥微服务
//            mybatis直播桥

}
}
